Electric combination urn



May 1 192 8.

A. T. GRUENBERG ELECTRIC COMBINATION URN Filed Jan. 1925 2 Sheets-Sheet 1 May l, 1928.

A. T. Gl RUENBERG ELECTRIC COMBINATION URN Filed Jan. 9. 1923 2 Sheets-Sheet 2 Patented May 1, 192a.

UNITED STATES PATENTOFFICE.

ALEXANDER '1. GBUENIBEBG, F KINGSTQN, NEW YbBK, ASSIGNOR TO L. EARTH SON, INC., A. CORPORATION OF NEW YORK.

ELECTRIC COMBINATION URN.

Application filed January 9, 1923. Serial No. 611,682.

This invention relates to urns for coflec and like decoctions.

An object of this invention is to provide for a single urn or like receptacle embodying comblnedly in a single unit space for the water to be heated and a space for holding the formed cofiee or like decoction, and such additional space as maybe required for the ground coflee or like material from which the decoction is made.

A further feature of the invention is the provision of a heating element, preferably of an electrical type, positioned within a. permanently closed casing having an opening 55 located at the side of the urn proper to pro- 'vide for removal of the heating unit for purposes of inspection or repair. I

A further feature embodies the mounting of the switch or like control element of the heating element and for concealing and pro tecting the electrical connection, as is desirable to avoid short circuiting or effective impairment of the electrical connections when drawing ofi the coffee and when filling the urn with water. v

Pursuant to a preferrediform of the invention, the urn comprises a casing suitably insulated with heat insulating material and i having a removable cover, an inwardlydisposed casing for receiving and storing the formed decoction, ;acontainer having a toraininous bottom 'removably located within such inwardly disposed casing and for holding the groundcoflee, the interior of the urn proper being liquid and vapor proof for the region above the casing for storing the formed coffee, and a passage provided with a valve having its manipulating member extending exteriorly of the urn and affording flow oi the heated water from a lower portion of'the interior of the urn to a region above the container holding the ground coffee. The heating unit is in the form of a tube of insulation pr 'ded with a special roove within which is heating wire, which heating coil is disposed within a housing closed within the interior a ofthe urn andopen' at the side of the urn, the eoil being supported by the coverof such 5' housin A hollow face plate is provided ,for he ding and enclosing the switch elements 9 ,1 tending tree t e p n ngf t e ound the electrical v coil housing to conceal the same and also protect the Wiring extending from the switch to the 'coil terminals. Y a

' Further features and objects of the invention will be more fully understood from the following detail description and the accompanying drawings, in which ig. 1 is a perspective elevation of the combination urn embodying my invention;

Fig. 2 is a top in Fig. 1, with t e cover removed;

Fig. 3 is a vertical section on line 33 of Fig. 2;

Fig. 4. is a Vertical section on line 4-4 of Fig. 3;

Filg. 2; ig. 6 is a detail vertical section on line 66 of Fig. 2; and

Fig. 7 is a-detail vertical section on line 7-7 of Fig. 2.

Referrin to the drawings, the urn properis indicate at 10 and may be of cylindrical configuration or other ornamental design as.

desired. The cover 11 isofadomeshape and is provided with the handle 12 to facilitate removal and replacement of the cover 11 when desired. The cover 11 may be sealed plan view of the urn shown K Fig. 5 is a vertical section on line 5-5 of in the correspondingly curved concavity 14 formed in the peripheral portion of the cover 11 and stiffened by the head 15 formed at the edge of the cover 11.

The bottom 16 of the urn 10 is preferably located above the lower edge 17 of the urn,

and the inflow nip le 18, 'for connection with any suitable supp y of water, may be positioned in the bottom 16. The bottom and major portion otthe side of the urn 10 is preferably insulated against dissipation of heat by forming the interior wall 19-and providing space for the asbestos fibres 20, or the like. v

Within the interior'of the urn '10, is 10- cated the casing 21 having the angular en- ;larged upper portion 22 for receiving and holding therein thecontainer 23 having the foraminous bottbm 24 of wire mesh or the like. The container 23 maybe provided withthe cover having the perforations 26 per,

mitating inflow of heated water therethrough,

as will more fully appear hereinafter. The

' cover plate is provided with the handle 27. The cover plate 25-may be located within the container 23 by forming. the inwardly turned bead 28.

The bottom of the casing 21 is preferably 1 conical as indicated at 29, and provided with the brace rods '38.

the discharge opening 43 of which extendsabove the cover plate 25 of the container 23.

The lower end 44 of the pipe 41 is located 'a the outflow opening 30, communicating with the outlet 31 connected by the nipple 32 to the faucet 33, having the handle 34.

To the faucet 33 is connected the level in-' dicating tube 35 of glass or the like, held at itsupper end within the bracket 36, se-v cured within the threaded block 37 located within a suitable opening in the side of the casing 10 vertically above the faucet 33. The level indicating tube is provided with At a suitable upper portion of the interior of the urn 10, I provide the liquid and vapor proof partition 39 which may be formed integrally with the upper portion 22 of the interior casing 21. Through a suitable opening 40 in the partition 39 extends the pipe 41 connected at its upper end to the cock 42,

considerable distance below the minimum level of the water in the urn 10.

Suitably connected with the interior of the urn 10 and above the maximum level of the water'therein and below the sealing partition 39, is the opening 45 to which is connected the release valve 46', by means of a nipple 47.

Pro1ect1ng interiorly of the urn at a lower portion thereof, I provide the housing48 closed permanently on all its sides within the interioriof the urn 10 and open solely at the side 49' on theexterior of the urn 10.

' coverplate 50 is provided for closing the till , exterior opening of the housing 48.. To the cover plate 50 is secured the electrical heating coil 51, preferably formed of the tube.

52 of insulation and provided with a spiral groove 53 in whichis wound the wiring 54,

the terminals of which are secured to the terminal posts 55, 55.

The electrical leads56, 56 connect with the contacts (not shown) of theswitch 57 havingthe movable switch finger 58. The switch is connected to theshouse lighting circuit or other suitable sourceofelcctrical energy.

Preferably, the hollow face, plate 59 servesto enclose the switch 57, leads 56' and theterminals 55,- and also the cap 50 of the housing' -48, thereby concealing these parts and protecting-the same from exposure of steamor other vapor, water and the like. I

The glass tube 60 is provided for indicating the level of the'water within the interior of the um 10 as by connecting with the faucet 61 and the nipple 62. with the interior The may be desired.

of the urn; the upper end of the indicating tube 60 may be connected through the hollow bracket 63 and nipple 64 with the upper portion. of the interior of the urn. The height of the water in the urn is indicated by the level inthe indicator tube 60..

It will be noted that the housing reason of its sealed sides within the interior of the urn 10 is at all times closed against entry of liquid. The mounting of the electrical heating coil' 51 as a unit on the cover plate 50 of the housing 48 permits the heating coil to be removed for repair or inspection by simple removal of the cover plate 50. Such construction aifords also removal of the heatin coil Without disturbing the water or other liquid within the urn and without ing or other supply.

In the useof the urn, water is let 1nto the interior of the urn through the nipple 18 connected through a suitable cock with the house water piping .or with any other disconnecting the urn from the water pip suitablesource. Upon removing the cover cock 42 closed, the generated steam is (101- lected under pressure by reason of the sealing partition 39. .Upon opening the valvewheel 42 of'the cook 42, the heated water passes upwardly through the pipe 44, nipple 41 and out of the discharge opening 43 of the cock 42 and is distributed by the top plate 25 over the coilee or the like containe'd within the .container 23. The formed cofi'ee passes through the foraminous bottom. 24 of the container 23 and is stored within the container 21 for useto be drawn. off through the cook 33, as desired. The amount of coffee stored within the storage casing 21 is indicated by the'level shown in the indicator tube 35.-

If desired, two electrical heating'coils 51, 51 may be employed as is indicated in Fig.

4 and the respective terminals connected 1 electrically 'in multiple as is indicated in Fig. 4, or may be connected in parallel as From the above, it my invention provides for a single urn for forming and storing asupply of heated water and ,for formin and storing a heated supply of coffee or ike decoction and that the heating of the waterand of the stored coffee 01"-l1ke decocti'on is efiectedby means of a single heating means.

It will be further observed that the invention ai fords the use of a heating unit se will be observed that which may be removed for purposes of inspection or repair without causing the emptying of the urn or without causing disconnection of the urn from the water sup- PY- Theinventlon is further advantageous in affording protection of the delicate parts including theelectrical parts from contact with water or other moisture and also re duces the number of connections disposed outwardly of the urn as is necessary in heretofore proposed coffee" iirns which required separate urns for the heated water and the tric heating mechanism therefor, the urn having an inner and outer wall, and a watertight, metal housing extending into the interior of the urn and through apertures in the urn walls and in watertight engagement with the inner wall, a removable closure plate for the outer end of said housin and an electric resistance unit detachab y secured to the inner face of the closure plate and having circuit terminals exterior thereto.

2. In combination, a heating urn and electric heating mechanism therefor, the urn having an inner and outer wall and a' watertight metal housing extending into the interior of the urn and through apertures in t e urn walls and in Watertlght engagement with the inner wall, a removable closure plate for the outer end-of said housing, and an electric resistance unit detachably secured to the inner face of thecl'osure plate and having circuit terminals exterior thereto, a controlling switch mount- ALEXANDER T. GRUENBERG. 

